Comparison of Factor VIII Levels after Adrenalin in Classic Hemophilia and von Willebrand’s Disease (vWd)

Abstract
The factor VIII response to adrenalin was compared in 5 patients with von Willebrand’s disease (vWd) and 10 hemophiliacs with baseline factor VIII procoagulant activity (VIIIAHF) of 0.01 u/ml or greater. Patients with vWd showed a two-fold VIII AHF increase, while those with hemophilia showed no significant change 1 hr following the subcutaneous injection of adrenalin. These results suggest that the adrenalin stimulation test may be of value in distinguishing certain patients with mild hemophilia from those with vWd. * Presented at the XII Congress of the World Federation of Haemophilia, New York, June 22-25, 1977